Arched Island Weather Forecast

    • 6
    • 16

    Shower or two

    • 7
    • 15

    Showers. Windy

    • 5
    • 12

    Showers easing. Windy

    • 7
    • 15

    Showers

    • 5
    • 11

    Showers

    • 4
    • 15

    Cloudy

    • 9
    • 15

    Shower or two

Today 18 Sep South East

Cloudy. High chance of showers in the far south, medium chance elsewhere. Winds north to northwesterly 25 to 40 km/h.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Northerly 15 to 25 knots turning northwesterly 20 to 30 knots in the evening.
Seas
1.5 to 2.5 metres.
1st Swell
West to southwesterly 2 to 3 metres.
Weather
Cloudy. 70% chance of showers.
Weather Situation
A series of cold fronts, embedded in a westerly airstream, are expected to cross the state during coming days. The first of the fronts is expected early Thursday, ahead of a stronger front later Friday. Further fronts are expected during Saturday to Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Arched Island Temperature Statistics View More

September Temperature

Cape Bruny (16km)

  • Lowest 6 September, 2025

    2.3 °C

  • Average September

    10.2 °C

  • Highest 15 September, 2025

    22.4 °C

Climate (2020–Present)

Cape Bruny (16km)

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  • Average Low 2020–2025

    9.6 °C

  • Average 2020–2025

    12.5 °C

  • Average High 2020–2025

    16.6 °C
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